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contex_b [2020/09/07 15:39]
contex_b [2020/09/07 15:52] (current)
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 {{ http://​www.dcc.ufmg.br/​~clodoveu/​files/​Images/​Contex-model-B/​20200823 as purchased.png?​500 | As purchased}} {{ http://​www.dcc.ufmg.br/​~clodoveu/​files/​Images/​Contex-model-B/​20200823 as purchased.png?​500 | As purchased}}
 +After cleaning
 +{{ http://​www.dcc.ufmg.br/​~clodoveu/​files/​Images/​Contex-model-B/​contex-1.jpg?​500 | Contex model B}}
-**More about this machine**+Serial number
-[[http://www.johnwolff.id.au/calculators/Burroughs/Burroughs.htm John Wolff shows a wider Class 5with 13 columns instead of 9, including ​column for Sterling currency units]]+{{ http://www.dcc.ufmg.br/~clodoveu/files/Images/​Contex-model-B/​contex-2.jpg?​500 ​Contex model B}} 
 +Inside view 
 +{{ http://​www.dcc.ufmg.br/​~clodoveu/​files/​Images/​Contex-model-B/​contex-3.png?​500 | Contex model B}} 
 +Bottom view -- notice the five blades for the keys in each columnarranged as fan 
 +{{ http://​www.dcc.ufmg.br/​~clodoveu/​files/​Images/​Contex-model-B/​contex-4.png?​500 | Contex model B}} 
 +**More about this machine**
-[[https://www.youtube.com/watch?​v=MpCXcOcAsHk ​Video: a demonstration of the Class 5 in action]]+[[http://www.johnwolff.id.au/calculators/​Contex/​Contex.htm ​John Wolff'​s page on Contex calculators]]
-[[http://public.beuth-hochschule.de/hamann/​burroughs/​burro5/​index.html ​An operations description,​ including an explanation on subtraction modes and their special cases]]+[[https://youtu.be/GD8kXroD4gg ​Video: a demonstration of the Contex model B]]
-[[http://collection.sciencemuseum.org.uk/objects/co59681/​burroughs-class-5-hand-operated-mechanical-adding-calculating-machine-full-keyboard-adding ​A beautifully preserved unit at the UK'​s ​Science Museum]]+[[https://www.jaapsch.net/mechcalc/contex.htm|Jaap'​s ​mechanical calculators page on the Contex machines]]
-[[https://arildamland.artstation.com/projects/k4lBOl | A time-lapse video of an artist recreating the shape of a Class 5 using only a photo and a 3D design software package]]+[[http://public.beuth-hochschule.de/hamann/contex/co-b/​index.html | An operations description,​ including ​an explanation on subtraction]]
-[[https://​archive.org/​details/​burr_instr/​page/​n9 | Instructions for Operating the Burroughs Calculator. 36 page booklet]] 
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contex_b.txt · Last modified: 2020/09/07 15:52 by clodoveu
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